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I 2 Sheets-Shet 1. J. J. BOYER.

TYPE WRITING MACHINE.

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J. J. BOYER.

TYPE WRITING MAGHINE.

No.- 428,264. Patented May Z0, 1890.

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ATENT 'Il UNITED STATEs EEiCE.

JOHN J. BOYER, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE AMERI- CAN IVRITING MACHINE COMPANY, OF SAME `PLACE.

TYPE-WRITING MACH-INE.

SPECIFICATION forming part of Letters Patent No. 428,264, dated May 20, 1890.

Application filed December 8, 1888. Serial No. 292,987. (Nol model.) I

To all whom, it may concern: necting with the universal bar (not shown) in Be it known that I, JOHN J. BOYER, a citizen a manner well known. of the United States, and aresident of Hart- II represents a ribbon-switch, slotted, as

ford, in lthe county of Hartford and Sta-te of seen at 7c 7c', for the passage of screws k2 7c3, 55 5 Connecticut, have invented certain new and and also slotted, as seen at k* 5, for the aduseful Improvements in Type-lVriting Mamission of the upper ends of the rodsjjl and chines, of which the following is a specicawire springs jgj.. From the under side of tion. the switch depen d dogs ji j, to prevent return Hy invention relates particularly to the movement of the ribbon-spools. The switch 6o 1o ribbon movementof a type writing machine, is notched in two places, as seen at m m', to and has for its main object to provide a sigreceive the free bent end of a. spring n, se-

naling device whereby the operator may be cure'd by a screw o to the frame-work.

visually informed when the inkingribbon The ribbon feeding and switching devices nas been entirely unwound from either spool, are those now universally employed on the 65 i 5 and hence has ceased to travel or feed. machineknown as the Caligraph,and hence My invention consists in certain features do not require an extended description. of construction and combinations of parts, I designates the inking-ribbon, and J a all as will be hereinafter morefully described, tape or band secured to each ribbon-spool. and particularly pointed out in the appended The ribbon is preferably attached to the tape 7o 2o claims'. at each end by means of a common pin p, as

In the accompanying drawings, Figure lis heretofore; but in lieu thereof it may be buta top view of a portion of a type-writing matoned thereto or fastened by other means. chine embodying my invention. Fig. 2 is a Moreover, instead of connecting the ribbon front elevation of the same, and Fig. 3 is a to the tapes, it may be fastened directly to the 75 25 vertical section at the line 5c with the top spools.

plate or frame-work of the machine removed. The signaling device or means, made, pref In the several views the same part will be erably, of round wire, consists of a ring or found designated by the same letter or nuloop portion 2, an arm 3, and an elongated meral of reference. eye or slotted 4portion 4:,at right angles to the 8o 3o A represents the top plate of a type-writing arm 3, formed by two parallel strands 5 5, machine, around the circular portion of which terminating, preferably, in a loop G, to which the type-levers (not shown) are pivoted or aris attached one end of a spring 7, whose other ranged as heretofore. 4end is connected to the frame-work of the B B represent theside frame-work orstandmachine, preferably, by the screw (l. TheA 85 3 5 ards of the machine, and C C the usual rear1` ring portion 2 is pivot-ed to the machine, prefcarriage guide-rails, mounted in brackets D erably,beneath the track E and by the screw D, which are secured by screws d d CZ d to f. To the inner free end of t-he arm 3 is prefthe top plate. erably attached a plate or tablet 8, bearing u E designates the usually-employed front the words Reverse ribbon. The machine 9o 4o carriage rail or track, which is mounted on lcontains two of these signaling devices, one

short pillars or posts c e at each end, and held on each side and reversely arran ged to be opin place by screws f f, passing through both erated by the ribbon in either direct-ion of its Y the rail and. the posts and entering tapped movement. The normal position of the sigholes in the top plate. To the front side of naling means is with the arm and tablet di- 95 55 the rail is attached a scale F, as heretofore. rectly beneath the track E and practically G G' represent the ribbon-spools, mounted out of sight of the operator. Near the end of on axles g g, supported by the frame-work, cach arm 3 is arranged a rearwardly-projectand provided with crank-handles h 7L. The ing ribbon-support 9. The ribbon is conspools are provided with ratchet-wheels h2 h3, nected at one end to either spool (preferably roo 5o which are adapt-ed to be actuated step by step by the tape J and pin p) and wound thereby pawls or dogsy i', secured to rods jj', conupon. Its free end is then threaded through the eye or slot 4 of one signal device, carried over the inner strand 5 and over the support 9, then over the support and the inner strand of the other signal device, and,passing through the slot 4 thereof, is connected to the other spool, preferably in the manner described.

Th e operation of the contrivance will be understood to be as follows: In the position in which the parts are drawn at Fig. l the ribbon is supposed to have been fed to the left from the spool G and to have actuated the signaling device at the right-hand side. Vhen this shall have occurred in practice, the operator is then to pull the ribbon-switch H to the right and thus throw the pawl z' and dog j* into engagement with the ratchet-Wheel h2,

b y which operation the pawl t" and the dog 7 will be disengaged from the ratchet-Wheel h3. The ivriti ng may then be continued and the ribbon I slowly wound upon the spool G by the step-by-step ratchet feed. NVhen the ribbon shall have been entirely unwound from the spool G', the pin p, connecting the lefthand end of the ribbon with the tape J on the spool, being too large to go through the slot 4, will, as the ribbon is continued to be fed to the right, abut against the strands 5 and vibrate the signaling device against the tension of the spring 7, thus throwing out the arm 3 and its tablet where they may be instantly seen by the operator, in the manner illustrated at the right-hand side of the machine. When the signal shall have been thus actuated at either side of the machine and the direction of feed of the ribbon has been altered and the empty spool rotated, the spring 7 will gradually and automatically return the arm 3 and its tablet to their normal position, preferably beneath the carriage-rail E; but, if desired, the spring may be dispensed with and the signal returned to irst position by hand.

While I prefer to use the pin of the ribbon to direct-ly cause the vibration of the signal, it will be understood, of course, that it is not an absolutely essential element, for any other projection on the ribbon would serve the same purpose. The ribbon itself may be doubled, bunched, or so folded as to actuate the signal without the employment of other means.

The supports 9 serve nicely to sustain the ribbon in the vicinity of the printing-point and prevent the same from buckling or curl-A ing, as is its tendency.

It will be seen that by my invention is provided a cheap and efficient means whereby the operator may be visually informed or signaled when the feed or travel of the ribbon has ceased and should be started in the reverse direction, thus avoiding the liability of imperfect impressions in the writing and the early destruction of the ribbon. l

So far as the main feature of my invention is concerned numerous changes in detail construction may be made Without departing from the spirit or principle thereof, the gist of which has already been explained, and will now be particularly pointed ont in the following clauses of the claim.

NVhat I claim as new, and desire to secure by Letters Patent, is-

l. In a type-writing machine, the combination, with the hiking-ribbon, of a verticallypivoted vibratory frame comprising a signalarm 3 and a slotted portion 4, through which the ribbon passes, and with which the ribbon co-operates to vibrate said frame and project the signal-arm, substantially as shown and described.

2. In a type-Writing machine, the combination, with the hiking-ribbon, of a verticallypivoted vibratory frame comprising a signalarm 3 and a slotted portion 4, arranged at right angles to the inking-ribbon and the signalarm, substantially as shown and described.

3. In a type-writing machine, the combination of a pivoted vibratory signal, an inkingribbon for actuating the same in one direction, and a spring for actuating it in the opposite direction, substantially as set forth.

4. In a type-writing machine, the combination of an inking-ribbon and a vibratory frame consisting of the arm 3, the ribbonsupport 9, and the strands 5 5, substantially as set forth.

5. In a type-writing machine, the combination, with an inking-ribbon, of a pair of reversely-arran ged pivoted signals, one of which signals is adapted to be turned by the ribbon When moving in one direction and the other by the ribbon When moving in the opposite direction, substantially as set forth.

Signed at New York city, in the county of New York and State of New York, this 3d day of October, A. D. 1888.

JOI-IN J. BOYER.

Vitnesses:

JACOB FELBEL, MARTIN LAYDEN. 

